大豆重迎茬减产的原因及农艺对策研究——重迎茬大豆的根系分泌物与根茬腐解物  

Study on the reason reducing yield of soybeans planted continuously and the way to get more output - root secretion and stubble rotten of soybeans

作　　者：何志鸿[1,2] 许艳丽[3] 刘忠堂[2,4] 韩晓增[3] 何雪莹[2] 

机构地区：[1]黑龙江省科技厅,哈尔滨150001 [2]国家大豆工程技术研究中心,哈尔滨150050 [3]中国科学院东北地理与农业生态研究所,哈尔滨150040 [4]黑龙江省农业科学院,哈尔滨150086

出　　处：《大豆科技》2011年第4期7-14,共8页Soybean Science & Technology

基　　金：1993年黑龙江省科技攻关招标课题;主持人江修业;1994-1996年黑龙江省科技攻关重大项目(G94B05-04-01);主持人刘忠堂;何志鸿;江修业;1995-2000年国家"九五"重中之重科技攻关课题"大豆大面积高产综合配套技术研究开发与示范"03专题(95-001-05-03)之01子专题;主持人刘忠堂;何志鸿;许艳丽

摘　　要：通过连续8年在黑龙江省6个生态区9个固定轮作场圃综合试验,试验区专项研究,框区、盆栽试验,实验室分析,以及大量的大面积生产调查,发现大豆重迎茬种植根系分泌物增加,且对大豆生长发育及土壤微生物区系有不利的影响,同时也影响到土壤微量元素的活化;根茬腐解物对大豆的生长和根系活力都有不利的影响,并使大豆的产量明显降低。研究结果表明,根系分泌物和根茬腐解物对重迎茬大豆的生长发育和产量有一定的影响,它们也是造成大豆重迎茬减产的一个原因。The experiments had been carried out for 8 years in 9 fixed rotation fields and 6 ecological regions of Heilongjiang Province by comprehensive tests, special research, pot experi- ment, laboratory analysis, and series of field experiments. The re- sult showed that： （1） When the soybean was planted continuous- ly, root secretion was more than that in normal rotation, which would be disadvantageous to growth and development of soybean and the system of microorganism in soil. Also, it would effect the activation of microelements in soil. （2） decaying substance of stubble effected on growth of soybean and activation of soybean roots disadvantageously, and reduced yeild of soybean significantly. All of this told us that the root secretion and decaying substance of stubble effect on growth and development of soybean and yield determinately, and they are one of the important reasons to reduce yield of soybeans planted continuously and al- ternately.

关 键 词：大豆 重迎茬 根系分泌物 根茬腐解物 

分 类 号：S565.1[农业科学—作物学]